Reverse Osmosis Systems

Pure, bottled-quality water delivered straight to your kitchen tap.

What are Total Dissolved Solids (TDS)?

You may hear our technicians talk about TDS levels. This refers to the total amount of mobile charged ions, including minerals, salts, or metals dissolved in a given volume of water.

Why does it matter in San Antonio?

Our local tap water often has high TDS levels (300-600+ ppm) due to the limestone aquifers. While mostly safe, high TDS causes "hard" tasting water and indicates the presence of minerals like calcium, magnesium, and even traces of arsenic or lead. Reverse Osmosis is the only way to drop TDS levels to near zero.

  • 0 - 50 PPM: Ideal Drinking Water (Bottled Quality)
  • 100 - 300 PPM: Average Tap Water
  • 500+ PPM: High TDS (EPA maximum contaminant level)

How Reverse Osmosis Works

Reverse Osmosis (RO) forces your tap water through a semi-permeable membrane to remove impurities that standard filters leave behind.

  • Stage 1: Sediment Filter – Removes dirt, rust, and silt.
  • Stage 2: Carbon Filter – Removes chlorine, bad tastes, and odors.
  • Stage 3: RO Membrane – The heart of the system. It filters out up to 99% of dissolved solids, including lead, arsenic, and fluoride.
  • Stage 4: Post-Carbon Polish – A final pass ensures the water is crisp and refreshing.

Why Every Home Needs RO

1. Better Tasting Everything

Coffee, tea, and home-cooked meals all taste better when you start with a pure water base free of San Antonio's "aquifer" taste.

2. Eliminate Lead & Toxins

Protect your family from heavy metals, pesticides, and nitrates that can occasionally find their way into groundwater.

3. Save Thousands

Stop buying plastic water bottles. A HartServices RO system provides high-end water for pennies per gallon.

4. Eco-Friendly

By switching to RO, you'll stop hundreds of plastic bottles from entering Texas landfills every single year.

5. Crystal Clear Ice

We can hook your RO system to your refrigerator, giving you clear, high-quality ice cubes that don't crumble or smell.

6. Health & Hydration

When your water tastes this good, your family will naturally drink more of it and fewer sugary sodas.

Commercial & Lease Space Benefits

1. High-Value Amenity

Offering "Filtered Drinking Water" in a lease space is a premium feature that sets your unit apart from the competition.

2. Reduce Plastic Waste

In office settings, an RO system eliminates the need for heavy 5-gallon water jugs and delivery services.

3. Protect Coffee Equipment

Purified water prevents scale buildup inside expensive commercial coffee makers and espresso machines.

4. Crystal Clear Ice

We can connect RO lines to office breakroom ice makers, ensuring your staff and clients have high-quality, clear ice for drinks.

5. Lower Liability

Ensure the water being consumed in your building is filtered to the highest possible standard, reducing health risks.

6. Built-in Convenience

Tenants love not having to install their own filters or lug cases of water up to their units or offices.

Stop Buying Water in Plastic.

Contact HartServices for a professional RO installation today.


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